Mikoyan-Gurevich MiG-5IT

As it was originally planned, the second prototype of the MiG-5 was going to be powered by two M-40 diesel engines rated each of them at 1500hp because diesel engines would, theoretically, offer greater range than gasoline powered one due to the lower fuel consumption.
However, the second prototype, AKA MiG IT (as MiG design bureau named it) or MiG DIS-200 (as it was called by the military designation), encountered a number of problems that hindered its development. That's why the second prototype was, in the end, fitted with two ASh-82 fourteen cylinder two-row radial engines rated at 1676hp each.
The decission of adopting radial engines led to a redesign of the engine nacelles, so, compared to the original DIS, the main wheel cover doors were enlarged and bulged and it was equipped with Hucks-type starter lugs on the propeller spinners.
Development works started at Moscow-Khodinka, but, as the state factory had to be evacuated due to the German offensive, the unfinished DIS-200 was taken East to Kuibyshev delaying the project seriously.
It wasn't until 22nd January 1942 that the prototype flew for the first time, but, after being tested at the factory in Kazan, the program came to an end shortly after in 1942 as aerial combat experience in the Eastern Front showed that there was no need for a long-range escort fighter as most bombing run missions performed by the Petlyakov Pe-2 and Ilyushin DB-3 bombers were of short duration and could be perfectly escorted by the already existing Lavochkin and Yakovlev single-engined fighters.

Sources:
1. http://www.airpages.ru/eng/ru/mig5_2.shtml
2. https://en.wikipedia.org/wiki/Mikoyan-Gurevich_DIS
3. Salamander Books - The Complete Book of Fighters

Mikoyan-Gurevich MiG-5

The Mikoyan-Gurevich MiG-5, AKA MiG-5T or MiG DIS-200, was a twin-engined escort fighter that was designed and developed to escort the Ilyushin DB-3 and the Petlyakov Pe-8 bombers of the Soviet Air Force with the possibility of performing secondary roles such as long-range reconnaissance, light-bombing or even torpedo-bombing. As the Soviet Air Force showed interest in the project and about some possible mass-manufacturing of the type, the official MiG-5 designation was allocated.
Design work started back in early 1940 and it was the first twin-engined aircraft designed by the MiG design bureau and it was going to be powered by two AM-37 engines rated at 1400hp each. It was also equipped with two AV-5I-Il-4 three-bladed propellers. It has also the honour of being the first Soviet aircraft to be equipped with pneumatically operated landing gear.
It was intended to be armed with two Berezin UB 12,7mm (0.5in) plus four ShKAS 7.62mm (0.3in) plus one VYA 23mm (0.9in) cannon in an under-fuselage pod, some very heavy weapon setting for a Soviet aircraft of the time. The VYA cannon was developed by A.A. Voronov and S.Y. Yartsev in 1940 and it was a formidable weapon able to penetrate 25mm (0.1in) thich armour at a distance of 400 meters (1312ft). The cannon pod could be replaced by either a payload of 1000Kg. (2205lb) of bombs or a Type 45-36 torpedo.
The unarmed DIS prototype was built at State Aircraft Factory Number 1 at Moscow-Khodinka and made its maiden flight on 19th May 1941 and state acceptance trials showed a top speed of 560km/h (348mph) which was 104Km/h (65mph) slower than expected. In an attempt to gain more speed, propellers were replaced by two four-bladed AV-9B-L-149 together with some minor aerodynamical improvements. Those modifications managed to increase the speed by 40km/h (25mph). The prototype had a rate of climb 15m/sec (2982ft/min) to 5000 meters (10404ft) with a range of 2280km (1417 miles).

Sources:
1. http://www.airpages.ru/eng/ru/mig5.shtml
2. https://en.wikipedia.org/wiki/Mikoyan-Gurevich_DIS
3. Salamander Books - The Complete Book of Fighters